It could also be indicating lenses for the first Minolta AF cameras, which if memory serves were not called Dynax, this is why for years you used to see S/H Minolta lenses with the MAF and MAFD indicators to distinguish between the original AF 'A' mount lenses (some of which came from MD designs e.g. the "Beercan") and those that were designed for the Dynax system which also brought in the now famed flash system.